The following links each contain
a series of tutorial videos

The Technical Basics set of videos dive a bit deeper into the more technical aspects of an OLAP product: data types, cubes and hierarchies, calculation engines, types of aggregations, even formulas and dependencies.

These videos explain PowerOLAP’s integration capability for moving data between transactional and analytical databases. This is one of PowerOLAP’s main components for compiling data for advanced analysis and data modeling.